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| author | Jeffle Xu <jefflexu@linux.alibaba.com> | 2022-01-14 08:30:29 +0100 |
|---|---|---|
| committer | David Howells <dhowells@redhat.com> | 2022-01-21 22:36:28 +0100 |
| commit | c7ca73155762684a896ba57edf48519b645ea528 (patch) | |
| tree | fc5df843ee17dea73dd75e7990eb2a0d7d760929 /fs/cachefiles | |
| parent | cachefiles: Calculate the blockshift in terms of bytes, not pages (diff) | |
| download | linux-c7ca73155762684a896ba57edf48519b645ea528.tar.xz linux-c7ca73155762684a896ba57edf48519b645ea528.zip | |
cachefiles: set default tag name if it's unspecified
fscache_acquire_cache() requires a non-empty name, while 'tag <name>'
command is optional for cachefilesd.
Thus set default tag name if it's unspecified to avoid the regression of
cachefilesd. The logic is the same with that before rewritten.
Signed-off-by: Jeffle Xu <jefflexu@linux.alibaba.com>
Signed-off-by: David Howells <dhowells@redhat.com>
Reviewed-by: Jeff Layton <jlayton@kernel.org>
cc: linux-cachefs@redhat.com
Link: https://lore.kernel.org/r/164251399914.3435901.4761991152407411408.stgit@warthog.procyon.org.uk/ # v1
Diffstat (limited to 'fs/cachefiles')
| -rw-r--r-- | fs/cachefiles/daemon.c | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/fs/cachefiles/daemon.c b/fs/cachefiles/daemon.c index 40a792421fc1..7ac04ee2c0a0 100644 --- a/fs/cachefiles/daemon.c +++ b/fs/cachefiles/daemon.c @@ -703,6 +703,17 @@ static int cachefiles_daemon_bind(struct cachefiles_cache *cache, char *args) return -EBUSY; } + /* Make sure we have copies of the tag string */ + if (!cache->tag) { + /* + * The tag string is released by the fops->release() + * function, so we don't release it on error here + */ + cache->tag = kstrdup("CacheFiles", GFP_KERNEL); + if (!cache->tag) + return -ENOMEM; + } + return cachefiles_add_cache(cache); } |